diff --git a/.travis.yml b/.travis.yml
index 2058e8d69..dd3bc17e9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,7 +38,7 @@ install:
   - unzip -o -d /tmp/protobuf /tmp/protoc-3.1.0-linux-x86_64.zip
   - export PATH=$PATH:/tmp/protobuf/bin/
   - go get -u github.com/vbatts/git-validation
-  - sudo wget https://github.com/crosbymichael/runc/releases/download/ctd-2/runc -O /bin/runc; sudo chmod +x /bin/runc
+  - sudo wget https://github.com/crosbymichael/runc/releases/download/ctd-3/runc -O /bin/runc; sudo chmod +x /bin/runc
   - wget https://github.com/xemul/criu/archive/v3.0.tar.gz -O /tmp/criu.tar.gz
   - tar -C /tmp/ -zxf /tmp/criu.tar.gz
   - cd /tmp/criu-3.0 && sudo make install-criu
diff --git a/cmd/ctr/run_windows.go b/cmd/ctr/run_windows.go
index c2deb62b3..be9f49720 100644
--- a/cmd/ctr/run_windows.go
+++ b/cmd/ctr/run_windows.go
@@ -64,7 +64,7 @@ func spec(id string, config *ocispec.ImageConfig, context *cli.Context) *specs.S
 
 	return &specs.Spec{
 		Version: specs.Version,
-		Root: specs.Root{
+		Root: &specs.Root{
 			Readonly: context.Bool("readonly"),
 		},
 		Process: &specs.Process{
diff --git a/spec_unix.go b/spec_unix.go
index e714580d3..d8e07c9c4 100644
--- a/spec_unix.go
+++ b/spec_unix.go
@@ -64,7 +64,7 @@ func defaultNamespaces() []specs.LinuxNamespace {
 func createDefaultSpec() (*specs.Spec, error) {
 	s := &specs.Spec{
 		Version: specs.Version,
-		Root: specs.Root{
+		Root: &specs.Root{
 			Path: defaultRootfsPath,
 		},
 		Process: &specs.Process{
@@ -81,7 +81,7 @@ func createDefaultSpec() (*specs.Spec, error) {
 				Effective:   defaltCaps(),
 				Ambient:     defaltCaps(),
 			},
-			Rlimits: []specs.LinuxRlimit{
+			Rlimits: []specs.POSIXRlimit{
 				{
 					Type: "RLIMIT_NOFILE",
 					Hard: uint64(1024),
diff --git a/spec_windows.go b/spec_windows.go
index a4e153706..ff06fc3cc 100644
--- a/spec_windows.go
+++ b/spec_windows.go
@@ -18,7 +18,7 @@ const pipeRoot = `\\.\pipe`
 func createDefaultSpec() (*specs.Spec, error) {
 	return &specs.Spec{
 		Version: specs.Version,
-		Root:    specs.Root{},
+		Root:    &specs.Root{},
 		Process: &specs.Process{
 			ConsoleSize: &specs.Box{
 				Width:  80,
diff --git a/vendor.conf b/vendor.conf
index e0c414637..cb2bfb720 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -14,7 +14,7 @@ github.com/matttproud/golang_protobuf_extensions v1.0.0
 github.com/docker/go-units v0.3.1
 github.com/gogo/protobuf d2e1ade2d719b78fe5b061b4c18a9f7111b5bdc8
 github.com/golang/protobuf 5a0f697c9ed9d68fef0116532c6e05cfeae00e55
-github.com/opencontainers/runtime-spec 198f23f827eea397d4331d7eb048d9d4c7ff7bee
+github.com/opencontainers/runtime-spec v1.0.0-rc6
 github.com/opencontainers/runc 429a5387123625040bacfbb60d96b1cbd02293ab
 github.com/Sirupsen/logrus v0.11.0
 github.com/containerd/btrfs e9c546f46bccffefe71a6bc137e4c21b5503cc18
diff --git a/vendor/github.com/opencontainers/runtime-spec/specs-go/config.go b/vendor/github.com/opencontainers/runtime-spec/specs-go/config.go
index 68ab112ef..c00f96ebc 100644
--- a/vendor/github.com/opencontainers/runtime-spec/specs-go/config.go
+++ b/vendor/github.com/opencontainers/runtime-spec/specs-go/config.go
@@ -9,7 +9,7 @@ type Spec struct {
 	// Process configures the container process.
 	Process *Process `json:"process,omitempty"`
 	// Root configures the container's root filesystem.
-	Root Root `json:"root"`
+	Root *Root `json:"root,omitempty"`
 	// Hostname configures the container's hostname.
 	Hostname string `json:"hostname,omitempty"`
 	// Mounts configures additional mounts (on top of Root).
@@ -45,7 +45,7 @@ type Process struct {
 	// Capabilities are Linux capabilities that are kept for the process.
 	Capabilities *LinuxCapabilities `json:"capabilities,omitempty" platform:"linux"`
 	// Rlimits specifies rlimit options to apply to the process.
-	Rlimits []LinuxRlimit `json:"rlimits,omitempty" platform:"linux"`
+	Rlimits []POSIXRlimit `json:"rlimits,omitempty" platform:"linux,solaris"`
 	// NoNewPrivileges controls whether additional privileges could be gained by processes in the container.
 	NoNewPrivileges bool `json:"noNewPrivileges,omitempty" platform:"linux"`
 	// ApparmorProfile specifies the apparmor profile for the container.
@@ -94,7 +94,7 @@ type User struct {
 // Root contains information about the container's root filesystem on the host.
 type Root struct {
 	// Path is the absolute path to the container's root filesystem.
-	Path string `json:"path,omitempty"`
+	Path string `json:"path"`
 	// Readonly makes the root filesystem for the container readonly before the process is executed.
 	Readonly bool `json:"readonly,omitempty"`
 }
@@ -202,8 +202,8 @@ type LinuxIDMapping struct {
 	Size uint32 `json:"size"`
 }
 
-// LinuxRlimit type and restrictions
-type LinuxRlimit struct {
+// POSIXRlimit type and restrictions
+type POSIXRlimit struct {
 	// Type of the rlimit to set
 	Type string `json:"type"`
 	// Hard is the hard limit for the specified type
@@ -550,7 +550,7 @@ const (
 type LinuxSeccompArg struct {
 	Index    uint                 `json:"index"`
 	Value    uint64               `json:"value"`
-	ValueTwo uint64               `json:"valueTwo"`
+	ValueTwo uint64               `json:"valueTwo,omiempty"`
 	Op       LinuxSeccompOperator `json:"op"`
 }
 
diff --git a/vendor/github.com/opencontainers/runtime-spec/specs-go/version.go b/vendor/github.com/opencontainers/runtime-spec/specs-go/version.go
index dfcf0090e..4804b80fc 100644
--- a/vendor/github.com/opencontainers/runtime-spec/specs-go/version.go
+++ b/vendor/github.com/opencontainers/runtime-spec/specs-go/version.go
@@ -11,7 +11,7 @@ const (
 	VersionPatch = 0
 
 	// VersionDev indicates development branch. Releases will be empty string.
-	VersionDev = "-rc5-dev"
+	VersionDev = "-rc6"
 )
 
 // Version is the specification version that the package types support.